Method and controller for commissioning wavelength division multiplexing optical network during capacity expansion

Abstract

The present invention discloses a method and a controller for commissioning a wave division multiplexing optical network during capacity expansion. The method includes: calculating, according to a preset rule, initial power of a wavelength service to be added and adding one or more wavelength services according to the initial power; detecting power of each newly-added wavelength service in transmission and separately calculating target power of each newly-added wavelength service according to a detected value and the initial power; calculating end-to-end performance of an existing wavelength service and end-to-end performance of each newly-added wavelength service when each newly-added wavelength service reaches its respective target power; and adjusting the power of each newly-added wavelength service when each newly-added wavelength service reaches its respective target power and the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service meets their respective lowest threshold requirements.

What is claimed is: 
     
       1. A method for commissioning a wavelength division multiplexing optical network during capacity expansion, comprising:
 calculating, according to a preset rule, initial power at a first network element of a wavelength service to be added; 
 adding one or more wavelength services at the first network element according to the initial power; 
 detecting power of each newly-added wavelength service in transmission at a second network element; 
 separately calculating target power of each newly-added wavelength service at the first network element according to a detected value at the second network element and the initial power at the first network element; 
 calculating end-to-end performance of an existing wavelength service and end-to-end performance of each newly-added wavelength service if each newly-added wavelength service reaches its respective target power; and 
 when each newly-added wavelength service reaches its respective target power and the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service meet their respective lowest threshold requirements, sequentially using each newly-added wavelength service as a newly-added wavelength services currently to be commissioned and performing the following operations: 
 calculating the end-to-end performance of the existing wavelength service if the newly-added wavelength service currently to be commissioned reaches its target power; and 
 adjusting power of the newly-added wavelength service currently to be commissioned to its target power when the newly-added wavelength service currently to be commissioned reaches its target power and the end-to-end performance of the existing wavelength service meets its lowest threshold requirement; 
 when each newly-added wavelength service reaches its respective target power and the end-to-end performance of the existing wavelength service does not meet its lowest threshold requirement and the end-to-end performance of each newly-added wavelength service meets its respective lowest threshold requirement, lowering the target power of each newly-added wavelength service by a second preset value to obtain new target power of each newly-added wavelength service; and returning to an operation of calculating, if each newly-added wavelength service reaches its respective target power, the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service, and end the operation till the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service meet or fail to meet their respective lowest threshold requirements. 
 
     
     
       2. The method according to  claim 1 , wherein the calculating, according to a preset rule, initial power of a wavelength service to be added and adding one or more wavelength services according to the initial power comprises:
 controlling the first network element to monitor power of existing wavelength services, calculating average power of the existing wavelength services according to a detection result of the first network element, using power that is lower than the average power by a preset ratio as the initial power, and controlling the first network element to add one or more wavelength services according to the initial power; or 
 using power that is lower than typical power of an optical amplifier board in a first network element by a preset ratio as the initial power and controlling the first network element to add one or more wavelength services according to the initial power, wherein the typical power is standard output power of the optical amplifier board in the first network element. 
 
     
     
       3. The method according to  claim 2 , wherein the detecting power of each newly-added wavelength service in transmission and separately calculating target power of each newly-added wavelength service according to a detected value and the initial power comprises:
 controlling the second network element to monitor the power of each newly-added wavelength service, and separately calculating the target power of each newly-added wavelength service according to a detected value detected by the second network element, the initial power, and the average power; or 
 controlling a second network element to monitor the power of each newly-added wavelength service, and separately calculating the target power of each newly-added wavelength service according to a detected value detected by the second network element, the initial power, and the typical power. 
 
     
     
       4. The method according to  claim 1 , further comprising:
 when each newly-added wavelength service reaches its respective target power and the end-to-end performance of the existing wavelength service meets its lowest threshold requirement and there is a certain newly-added wavelength service whose end-to-end performance does not meet its lowest threshold requirement, disabling the newly-added wavelength service whose end-to-end performance does not meet its lowest threshold requirement, or raising target power of the newly-added wavelength service whose end-to-end performance does not meet its lowest threshold requirement by a first preset value to obtain new target power of the newly-added wavelength service whose end-to-end performance does not meet its lowest threshold requirement; and returning to an operation of calculating, if each newly-added wavelength service reaches its respective target power, the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service, and end the operation till the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service meet or fail to meet their respective lowest threshold requirements. 
 
     
     
       5. The method according to  claim 1 , further comprising: when the newly-added wavelength service currently to be commissioned reaches its target power and the end-to-end performance of the existing wavelength service does not meet its lowest threshold requirement, disabling the newly-added wavelength service currently to be commissioned or lowering target power of the newly-added wavelength service currently to be commissioned by a third preset value to obtain new target power of the newly-added wavelength service currently to be commissioned; and returning to an operation of calculating, if the newly-added wavelength service currently to be commissioned reaches its target power, the end-to-end performance of the existing wavelength service, till the end-to-end performance of the existing wavelength service meets its lowest threshold requirement. 
     
     
       6. An optical network system, comprising:
 a first network element; and 
 a second network element, wherein: 
 the first network element is configured to calculate, according to a preset rule, initial power of a wavelength service to be added; 
 the first network element is configured to add one or more wavelength services according to the initial power; 
 the second network element is configured to detect power of each newly-added wavelength service in transmission; 
 the second network element is configured to separately calculate, according to a detected value at the second network element and the initial power at the first network element, target power of each newly-added wavelength service at the first network element; 
 calculate, if each newly-added wavelength service reaches its respective target power, end-to-end performance of an existing wavelength service and end-to-end performance of each newly-added wavelength service; and 
 when each newly-added wavelength service reaches its respective target power and the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service meet their respective lowest threshold requirements, sequentially use each newly-added wavelength service as a newly-added wavelength service currently to be commissioned and perform the following operations: 
 calculating the end-to-end performance of the existing wavelength service if the newly-added wavelength service currently to be commissioned reaches its target power; 
 adjusting power of the newly-added wavelength service currently to be commissioned to its target power when the newly-added wavelength service currently to be commissioned reaches its target power and the end-to-end performance of the existing wavelength service meets its lowest threshold requirement; 
 when each newly-added wavelength service reaches its respective target power and the end-to-end performance of the existing wavelength service does not meet its lowest threshold requirement and the end-to-end performance of each newly-added wavelength service meets its respective lowest threshold requirement, lower the target power of each newly-added wavelength service by a second preset value to obtain new target power of each newly-added wavelength service; and return to an operation of calculating, if each newly-added wavelength service reaches its respective target power, the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service, and end the operation till the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service meet or fail to meet their respective lowest threshold requirements. 
 
     
     
       7. The optical network system according to  claim 6 , wherein the first network element is further configured to:
 monitor power of existing wavelength services, calculate average power of the existing wavelength services according to a detection result of the first network element, use power which is lower than the average power by a preset ratio as the initial power, and add one or more wavelength services according to the initial power; or 
 use power which is lower than typical power of an optical amplifier board in a first network element by a preset ratio as the initial power, and to add one or more wavelength services according to the initial power; and the typical power is standard output power of the optical amplifier board in the first network element. 
 
     
     
       8. The optical network system according to  claim 7 , wherein the second network element is further configured to:
 detect the power of each newly-added wavelength service and separately calculate the target power of each newly-added wavelength service according to a detected value detected by the second network element, the initial power, and the average power; or 
 detect the power of each newly-added wavelength service and separately calculate the target power of each newly-added wavelength service according to a detected value detected by the second network element, the initial power, and the typical power. 
 
     
     
       9. The optical network system according to  claim 6 , the second network element is further configured to:
 when each newly-added wavelength service reaches its respective target power and the end-to-end performance of the existing wavelength service meets its lowest threshold requirement and there is a certain newly-added wavelength service whose end-to-end performance does not meet its lowest threshold requirement, disable the newly-added wavelength service whose end-to-end performance does not meet its lowest threshold requirement, or raise target power of the newly-added wavelength service whose end-to-end performance does not meet its lowest threshold requirement by a first preset value to obtain new target power of the newly-added wavelength service whose end-to-end performance does not meet its lowest threshold requirement; and return to an operation of calculating, if each newly-added wavelength service reaches its respective target power, the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service, and end the operation till the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service meet or fail to their respective lowest threshold requirements. 
 
     
     
       10. The optical network system according to  claim 6 , the second network element is further configured to:
 when the newly-added wavelength service currently to be commissioned reaches its target power and the end-to-end performance of the existing wavelength service does not meet its lowest threshold requirement, disable the newly-added wavelength service currently to be commissioned, or lower target power of the newly-added wavelength service currently to be commissioned by a third preset value to obtain new target power of the newly-added wavelength service currently to be commissioned; and return to an operation of calculating, if the newly-added wavelength service currently to be commissioned reaches its target power, the end-to-end performance of the existing wavelength service, till the end-to-end performance of the existing wavelength service meets its lowest threshold requirement.